Direct and Inverse Variation

Question Direct
y = kx Direct
k=yx Inverse
y=10x Direct
The relationship between the height of a cylinder and the circumfrence of its base when the volume is fixed (constant).For example if I have 12oz. of soda. Inverse
Dividing x by three results in y also being divided by three. Direct
Doubling x by causes y to double. Direct
The product of x and y is always 40 Inverse
The relationship between the circumfefence of a circle and its diameter. Direct
x1x2=y1y2 Direct

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